ADE7166 Datasheet PDF - Analog Devices

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ADE7166
Analog Devices

Part Number ADE7166
Description Single-Phase Energy Measurement IC
Page 30 Pages


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Data Sheet
Single-Phase Energy Measurement IC
with 8052 MCU, RTC, and LCD Driver
ADE7116/ADE7166/ADE7169/ADE7566/ADE7569
GENERAL FEATURES
Wide supply voltage operation: 2.4 V to 3.7 V
Internal bipolar switch between regulated and battery inputs
Ultralow power operation with power saving modes (PSM)
Full operation: 4 mA to 1.6 mA (PLL clock dependent)
Battery mode: 3.2 mA to 400 µA (PLL clock dependent)
Sleep mode
Real-time clock (RTC) mode: 1.5 µA
RTC and LCD mode: 38 µA (LCD charge pump enabled)
Reference: 1.2 V ± 0.1% (10 ppm/°C drift)
64-lead RoHS package option
Low profile quad flat package (LQFP)
Operating temperature range: −40°C to +85°C
ENERGY MEASUREMENT FEATURES
Proprietary analog-to-digital converters (ADCs) and digital
signal processing (DSP) provide high accuracy active
(watt), reactive (var), and apparent energy (volt ampere
(VA)) measurement
<0.1% error on active energy over a dynamic range of
1000 to 1 at 25°C
<0.5% error on reactive energy over a dynamic range of
1000 to 1 at 25°C (ADE7169 and ADE7569 only)
<0.5% error on root mean square (rms) measurements
over a dynamic range of 500 to 1 for current (Irms) and
100 to 1 for voltage (Vrms) at 25°C
Supports IEC 62053-21, IEC 62053-22, and IEC 62053-23;
EN 50470-3 Class A, Class B, and Class C; and ANSI C12-16
Differential input with programmable gain amplifiers (PGAs)
supports shunts, current transformers, and di/dt current
sensors (ADE7169 and ADE7569 only)
2 current inputs for antitamper detection in the ADE7116/
ADE7166/ADE7169
High frequency outputs proportional to Irms, active, reactive,
or apparent power (AP)
Table 1. Features Available on Each Device
Feature
Part No.
Antitamper
ADE7116, ADE7166, ADE7169
Watt, VA, Irms, Vrms
ADE7116, ADE7166, ADE7169, ADE7566,
ADE7569
Var ADE7169, ADE7569
di/dt Sensor
ADE7169, ADE7569
MICROPROCESSOR FEATURES
8052-based core
Single-cycle 4 MIPS 8052 core
8052-compatible instruction set
32.768 kHz external crystal with on-chip PLL
2 external interrupt sources
External reset pin
Low power battery mode
Wake up from input/output (I/O), temperature change1,
alarm, and universal asynchronous receiver/transmitter
(UART)
LCD driver operation
Temperature measurement
Real-time clock (RTC)
Counter for seconds, minutes, and hours
Automatic battery switchover for RTC backup
Operation down to 2.4 V
Ultralow battery supply current: 1.5 µA
Selectable output frequency: 1 Hz to 16 kHz
Embedded digital crystal frequency compensation for
calibration and temperature variation of 2 ppm resolution
Integrated LCD driver
108-segment driver for the ADE7566/ADE7569 and
104-segment driver for the ADE7116/ADE7166/ADE7169
2×, 3×, or 4× multiplexing
LCD voltages generated internally1 or with external resistors
Internal adjustable drive voltages up to 5 V independent
of power supply level1
On-chip peripherals
UART interface
SPI or I2C
Watchdog timer
Power supply management with user selectable levels
Memory: 16 kB flash memory, 512 bytes RAM
Development tools
Single pin emulation
IDE based assembly and C-source debugging
1 Not available in the ADE7116.
Rev. C
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Tel: 781.329.4700 ©2007–2015 Analog Devices, Inc. All rights reserved.
Technical Support
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ADE7116/ADE7166/ADE7169/ADE7566/ADE7569
Data Sheet
TABLE OF CONTENTS
General Features ............................................................................... 1 
Energy Measurement Features........................................................ 1 
Microprocessor Features.................................................................. 1 
Revision History ............................................................................... 3 
General Description ......................................................................... 4 
Functional Block Diagrams............................................................. 4 
Specifications..................................................................................... 6 
Energy Metering ........................................................................... 6 
Analog Peripherals ....................................................................... 7 
Digital Interface ............................................................................ 8 
Timing Specifications ................................................................ 10 
Absolute Maximum Ratings.......................................................... 15 
Thermal Resistance .................................................................... 15 
ESD Caution................................................................................ 15 
Pin Configurations and Function Descriptions ......................... 16 
Typical Performance Characteristics ........................................... 22 
Performance Curves for the ADE7169 and ADE7569 Only. 25 
Terminology .................................................................................... 26 
Special Function Register (SFR) Mapping .................................. 27 
Power Management........................................................................ 30 
Power Management Register Details ....................................... 30 
Power Supply Architecture........................................................ 33 
Battery Switchover...................................................................... 33 
Power Supply Management (PSM) Interrupt ......................... 34 
Using the Power Supply Features ............................................. 36 
Operating Modes ............................................................................ 38 
PSM0 (Normal Mode) ............................................................... 38 
PSM1 (Battery Mode) ................................................................ 38 
PSM2 (Sleep Mode).................................................................... 38 
3.3 V Peripherals and Wake-Up Events................................... 39 
Transitioning Between Operating Modes ............................... 40 
Using the Power Management Features .................................. 40 
Energy Measurement ..................................................................... 41 
Access to Energy Measurement SFRs ...................................... 41 
Access to Internal Energy Measurement Registers................ 41 
Energy Measurement Registers ................................................ 44 
Energy Measurement Internal Register Details ..................... 45 
Interrupt Status/Enable SFRs .................................................... 48 
Analog Inputs.............................................................................. 50 
Analog-to-Digital Conversion.................................................. 51 
Fault Detection ........................................................................... 55 
di/dt Current Sensor and Digital Integrator for the
ADE7169/ADE7569 ................................................................... 56 
Power Quality Measurements................................................... 58 
Phase Compensation ................................................................. 60 
RMS Calculation ........................................................................ 60 
Active Power Calculation .......................................................... 63 
Active Energy Calculation ........................................................ 65 
Reactive Power Calculation (ADE7169/ADE7569) ............... 68 
Reactive Energy Calculation (ADE7169/ADE7569).............. 69 
Apparent Power Calculation..................................................... 73 
Apparent Energy Calculation ................................................... 74 
Ampere Hour Accumulation.................................................... 75 
Energy to Frequency Conversion............................................. 76 
Energy Register Scaling ............................................................. 77 
Energy Measurement Interrupts .............................................. 77 
Temperature, Battery, and Supply Voltage Measurements........ 78 
Temperature Measurement ....................................................... 80 
Battery Measurement................................................................. 80 
External Voltage Measurement ................................................ 81 
8052 MCU Core Architecture....................................................... 83 
MCU Registers............................................................................ 83 
Basic 8052 Registers ................................................................... 85 
Standard 8052 SFRs.................................................................... 86 
Memory Overview ..................................................................... 86 
Addressing Modes...................................................................... 87 
Instruction Set ............................................................................ 89 
Read-Modify-Write Instructions ............................................. 91 
Instructions That Affect Flags .................................................. 91 
Dual Data Pointers ......................................................................... 93 
Interrupt System ............................................................................. 94 
Standard 8052 Interrupt Architecture ..................................... 94 
Interrupt Architecture ............................................................... 94 
Interrupt Registers...................................................................... 94 
Interrupt Priority........................................................................ 95 
Interrupt Flags ............................................................................ 96 
Interrupt Vectors ........................................................................ 98 
Interrupt Latency........................................................................ 98 
Context Saving............................................................................ 98 
Watchdog Timer ............................................................................. 99 
Rev. C | Page 2 of 152



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Data Sheet
ADE7116/ADE7166/ADE7169/ADE7566/ADE7569
Writing to the Watchdog Timer SFR (WDCON,
Address 0xC0) .......................................................................... 100 
Watchdog Timer Interrupt...................................................... 100 
LCD Driver ................................................................................... 101 
LCD Registers ........................................................................... 101 
LCD Setup ................................................................................. 104 
LCD Timing and Waveforms ................................................. 104 
Blink Mode................................................................................ 105 
Display Element Control......................................................... 105 
Voltage Generation .................................................................. 106 
LCD External Circuitry........................................................... 107 
LCD Function in PSM2 Mode ............................................... 107 
Flash Memory ............................................................................... 109 
Flash Memory Overview......................................................... 109 
Flash Memory Organization................................................... 110 
Using the Flash Memory ......................................................... 110 
Protecting the Flash Memory ................................................. 114 
In Circuit Programming ......................................................... 115 
Timers ............................................................................................ 116 
Timer Registers......................................................................... 116 
Timer 0 and Timer 1................................................................ 118 
Timer 2 ...................................................................................... 119 
Phase-Locked Loop (PLL) .......................................................... 121 
PLL Registers ............................................................................ 121 
Real-Time Clock (RTC) .............................................................. 122 
RTC SFRs .................................................................................. 122 
Read and Write Operations .................................................... 125 
RTC Modes ............................................................................... 125 
RTC Interrupts ..........................................................................125 
RTC Calibration ........................................................................126 
UART Serial Interface...................................................................127 
UART SFRs ................................................................................127 
UART Operation Modes ..........................................................130 
UART Baud Rate Generation ..................................................131 
UART Additional Features ......................................................133 
Serial Peripheral Interface (SPI)..................................................134 
SPI Registers ..............................................................................134 
SPI Pins.......................................................................................137 
SPI Master Operating Modes ..................................................138 
SPI Interrupt and Status Flags .................................................139 
I2C-Compatible Interface .............................................................140 
Serial Clock Generation ...........................................................140 
Slave Addresses..........................................................................140 
I2C Registers...............................................................................140 
Read and Write Operations .....................................................141 
I2C Receive and Transmit FIFOs.............................................142 
I/O Ports .........................................................................................143 
Parallel I/O.................................................................................143 
I/O Registers ..............................................................................144 
Port 0...........................................................................................147 
Port 1...........................................................................................147 
Port 2...........................................................................................147 
Determining the Version of the Device .....................................148 
Outline Dimensions......................................................................149 
Ordering Guide .........................................................................149 
REVISION HISTORY
10/15—Rev. B to Rev. C
Deleted ADE7156 and 64-Lead LFCSP_VQ Package ... Universal
Changes to Figure 46 ......................................................................53
Updated Outline Dimensions......................................................150
Changes to Ordering Guide.........................................................151
11/08—Rev. A to Rev. B
Added ADE7116/ADE7156 .............................................. Universal
Changes to Table 1 ............................................................................1
Added Figure 2 ..................................................................................5
Changes to Table 13 ........................................................................16
Added Figure 10 and Table 14; Renumbered Sequentially........19
Added Exposed Pad Notation to Outline Dimensions ............148
Changes to Ordering Guide.........................................................149
12/07—Rev. 0 to Rev. A
Added ADE7166/ADE7169.............................................. Universal
Changes to Table 1 ............................................................................1
Changes to Ordering Guide.........................................................144
11/07—Revision 0: Initial Version
Rev. C | Page 3 of 152



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ADE7116/ADE7166/ADE7169/ADE7566/ADE7569
Data Sheet
GENERAL DESCRIPTION
The ADE7116/ADE7166/ADE7169/ADE7566/ADE75691
integrate the Analog Devices, Inc., energy (ADE) metering IC
analog front end and fixed function DSP solution with an
enhanced 8052 MCU core, an RTC, an LCD driver, and all the
peripherals to make an electronic energy meter with an LCD
display in a single device.
The ADE measurement core includes active, reactive, and apparent
energy calculations, as well as voltage and current rms measure-
ments. This information is accessible for energy billing by using
the built in energy scalars. Many power line supervisory features
such as SAG, peak, and zero crossing are included in the energy
measurement DSP to simplify energy meter design.
The microprocessor functionality includes a single cycle 8052
core, a real-time clock with a power supply backup pin, an SPI
or I2C interface, and a UART interface. The ready to use infor-
mation from the ADE core reduces the program memory size
requirement, making it easy to integrate complicated design
into 16 kB of flash memory.
The ADE7116/ADE7166/ADE7169/ADE7566/ADE7569 also
include a 108-/104-segment LCD driver. In the ADE7166/
ADE7169/ADE7566/ADE7569, this driver generates voltages
capable of driving LCDs up to 5 V.
1 Patents pending.
FUNCTIONAL BLOCK DIAGRAMS
IP 52
IN 53
VP 49
VN 50
DGND 63
AGND 54
VBAT 58
57 43 42
38 39 40 41 39 38 7 6
45 11 43 42 41 40 39 38 37 36 5 6 7 8 9 10
1.20V
REF
+
PGA1
ADC
+
PGA2
ADC
SPI/I2C
SERIAL
INTERFACE
3 × 16-BIT
COUNTER
TIMERS
ENERGY
MEASUREMENT
DSP
ADE7566/ADE7569
3V/5V LCD
CHARGE PUMP
108-SEGMENT
LCD DRIVER
TEMP
SENSOR
TEMP
ADC
BATTERY
ADC
POWER SUPPLY
CONTROL AND
MONITORING
PROGRAM MEMORY
16kB FLASH
USER RAM
256 BYTES
USER XRAM
256 BYTES
VDCIN
ADC
LDO
POR
LDO
SINGLE
CYCLE
8052
MCU
WATCHDOG
TIMER
DOWNLOADER
DEBUGGER
UART
TIMER
UART
SERIAL
PORT
PLL
RTC OSC
64 60
61 62 59 56 51 44
36 37
47 46 48
12 P2.0/FP18
13 P2.1/FP17
14 P2.2/FP16
44 P2.3 (SDEN/P2.3)
16 LCDVP2
18 LCDVA
17 LCDVB
15 LCDVC
4 COM0
...
1 COM3
35 FP0
...
20 FP15
14 FP16
13 FP17
12 FP18
11 FP19
10 FP20
9 FP21
8 FP22
7 FP23
6 FP24
5 FP25
55 FP26
1 FP27
2 FP28
45
Figure 1. ADE7566/ADE7569 Functional Block Diagram
Rev. C | Page 4 of 152



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